What term describes an allele that is masked or covered/dominated up by another allele? A. Recessive Allele
B. Dominant Allele
C. Homzygous
D. Heterozygous

A.

Explanation:

A recessive allele is an allele that gets covered up by a dominant allele.

Example -

Lets say that two people were breeding. Brown hair would be the dominant trait, with blonde as a recessive. If the male has the allele Bb, and the female has bb, then you would put these into a table. Your outcome would come as

      B       b

b    Bb     bb

b    Bb     bb

So there would be a 50/50 chance of the offspring having brunette or blonde hair.

Hope this helps!

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

p

explanation: